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A current is passed through two voltmeters connected in series. The first voltmeter contains (aq) while the second voltmeter contains (aq). The relative atomic masses of and are in the ratio of . The ratio of the mass of liberated to the mass of liberated is:

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Important Questions on Electrochemistry
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Aluminium oxide may be electrolyzed at to furnish aluminium metal.
(Atomic mass . Faraday ) The cathode reaction is:
To prepare of aluminium metal by this method would require:

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